Mercurial > hg
annotate mercurial/manifest.py @ 8744:6b675c781c6d
merge: simplify 'other deleted' case
author | Matt Mackall <mpm@selenic.com> |
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date | Mon, 08 Jun 2009 18:14:44 -0500 |
parents | beae42f3d93b |
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1089 | 1 # manifest.py - manifest revision class for mercurial |
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2 # |
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3 # Copyright 2005-2007 Matt Mackall <mpm@selenic.com> |
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4 # |
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5 # This software may be used and distributed according to the terms of the |
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6 # GNU General Public License version 2, incorporated herein by reference. |
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7 |
3891 | 8 from i18n import _ |
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9 import mdiff, parsers, error, revlog |
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10 import array, struct |
79 | 11 |
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12 class manifestdict(dict): |
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13 def __init__(self, mapping=None, flags=None): |
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14 if mapping is None: mapping = {} |
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15 if flags is None: flags = {} |
2831 | 16 dict.__init__(self, mapping) |
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17 self._flags = flags |
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18 def flags(self, f): |
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19 return self._flags.get(f, "") |
6743 | 20 def set(self, f, flags): |
21 self._flags[f] = flags | |
2831 | 22 def copy(self): |
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23 return manifestdict(dict.copy(self), dict.copy(self._flags)) |
2831 | 24 |
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25 class manifest(revlog.revlog): |
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26 def __init__(self, opener): |
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27 self.mapcache = None |
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28 self.listcache = None |
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29 revlog.revlog.__init__(self, opener, "00manifest.i") |
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30 |
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31 def parse(self, lines): |
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32 mfdict = manifestdict() |
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33 parsers.parse_manifest(mfdict, mfdict._flags, lines) |
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34 return mfdict |
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35 |
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36 def readdelta(self, node): |
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37 r = self.rev(node) |
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38 return self.parse(mdiff.patchtext(self.revdiff(r - 1, r))) |
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39 |
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40 def read(self, node): |
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41 if node == revlog.nullid: |
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42 return manifestdict() # don't upset local cache |
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43 if self.mapcache and self.mapcache[0] == node: |
561 | 44 return self.mapcache[1] |
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45 text = self.revision(node) |
1534 | 46 self.listcache = array.array('c', text) |
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47 mapping = self.parse(text) |
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48 self.mapcache = (node, mapping) |
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49 return mapping |
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50 |
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51 def _search(self, m, s, lo=0, hi=None): |
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52 '''return a tuple (start, end) that says where to find s within m. |
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53 |
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54 If the string is found m[start:end] are the line containing |
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55 that string. If start == end the string was not found and |
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56 they indicate the proper sorted insertion point. This was |
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57 taken from bisect_left, and modified to find line start/end as |
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58 it goes along. |
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59 |
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60 m should be a buffer or a string |
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61 s is a string''' |
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62 def advance(i, c): |
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63 while i < lenm and m[i] != c: |
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64 i += 1 |
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65 return i |
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66 if not s: |
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67 return (lo, lo) |
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68 lenm = len(m) |
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69 if not hi: |
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70 hi = lenm |
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71 while lo < hi: |
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72 mid = (lo + hi) // 2 |
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73 start = mid |
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74 while start > 0 and m[start-1] != '\n': |
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75 start -= 1 |
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76 end = advance(start, '\0') |
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77 if m[start:end] < s: |
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78 # we know that after the null there are 40 bytes of sha1 |
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79 # this translates to the bisect lo = mid + 1 |
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80 lo = advance(end + 40, '\n') + 1 |
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81 else: |
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82 # this translates to the bisect hi = mid |
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83 hi = start |
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84 end = advance(lo, '\0') |
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85 found = m[lo:end] |
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86 if cmp(s, found) == 0: |
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87 # we know that after the null there are 40 bytes of sha1 |
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88 end = advance(end + 40, '\n') |
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89 return (lo, end+1) |
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90 else: |
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91 return (lo, lo) |
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92 |
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93 def find(self, node, f): |
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94 '''look up entry for a single file efficiently. |
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95 return (node, flags) pair if found, (None, None) if not.''' |
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96 if self.mapcache and node == self.mapcache[0]: |
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97 return self.mapcache[1].get(f), self.mapcache[1].flags(f) |
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98 text = self.revision(node) |
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99 start, end = self._search(text, f) |
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100 if start == end: |
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101 return None, None |
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102 l = text[start:end] |
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103 f, n = l.split('\0') |
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104 return revlog.bin(n[:40]), n[40:-1] |
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105 |
2841 | 106 def add(self, map, transaction, link, p1=None, p2=None, |
741 | 107 changed=None): |
644 | 108 # apply the changes collected during the bisect loop to our addlist |
1534 | 109 # return a delta suitable for addrevision |
110 def addlistdelta(addlist, x): | |
111 # start from the bottom up | |
644 | 112 # so changes to the offsets don't mess things up. |
1534 | 113 i = len(x) |
644 | 114 while i > 0: |
115 i -= 1 | |
1534 | 116 start = x[i][0] |
117 end = x[i][1] | |
118 if x[i][2]: | |
119 addlist[start:end] = array.array('c', x[i][2]) | |
644 | 120 else: |
121 del addlist[start:end] | |
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122 return "".join([struct.pack(">lll", d[0], d[1], len(d[2])) + d[2] |
1534 | 123 for d in x ]) |
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124 |
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125 def checkforbidden(l): |
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126 for f in l: |
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127 if '\n' in f or '\r' in f: |
7633 | 128 raise error.RevlogError( |
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129 _("'\\n' and '\\r' disallowed in filenames: %r") % f) |
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130 |
644 | 131 # if we're using the listcache, make sure it is valid and |
132 # parented by the same node we're diffing against | |
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133 if not (changed and self.listcache and p1 and self.mapcache[0] == p1): |
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134 files = sorted(map) |
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Matt Mackall <mpm@selenic.com>
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135 checkforbidden(files) |
3607
f4c9bb4ad7b1
issue352: disallow '\n' and '\r' in filenames (dirstate and manifest)
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
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3223
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136 |
1651 | 137 # if this is changed to support newlines in filenames, |
138 # be sure to check the templates/ dir again (especially *-raw.tmpl) | |
7634
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revlog: kill from-style imports
Matt Mackall <mpm@selenic.com>
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139 hex, flags = revlog.hex, map.flags |
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revlog: kill from-style imports
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140 text = ["%s\000%s%s\n" % (f, hex(map[f]), flags(f)) |
4633
ff7253a0d1da
Cleanup of whitespace, indentation and line continuation.
Thomas Arendsen Hein <thomas@intevation.de>
parents:
4258
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141 for f in files] |
1534 | 142 self.listcache = array.array('c', "".join(text)) |
644 | 143 cachedelta = None |
144 else: | |
1534 | 145 addlist = self.listcache |
644 | 146 |
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manifest: make checkforbidden take a list
Matt Mackall <mpm@selenic.com>
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147 checkforbidden(changed[0]) |
644 | 148 # combine the changed lists into one list for sorting |
149 work = [[x, 0] for x in changed[0]] | |
150 work[len(work):] = [[x, 1] for x in changed[1]] | |
151 work.sort() | |
152 | |
153 delta = [] | |
1534 | 154 dstart = None |
155 dend = None | |
156 dline = [""] | |
157 start = 0 | |
158 # zero copy representation of addlist as a buffer | |
159 addbuf = buffer(addlist) | |
644 | 160 |
1534 | 161 # start with a readonly loop that finds the offset of |
162 # each line and creates the deltas | |
644 | 163 for w in work: |
164 f = w[0] | |
741 | 165 # bs will either be the index of the item or the insert point |
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fix parsing of tags. make parse errors useful. add new tag tests.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
2142
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166 start, end = self._search(addbuf, f, start) |
644 | 167 if w[1] == 0: |
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revlog: kill from-style imports
Matt Mackall <mpm@selenic.com>
parents:
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168 l = "%s\000%s%s\n" % (f, revlog.hex(map[f]), map.flags(f)) |
644 | 169 else: |
1534 | 170 l = "" |
171 if start == end and w[1] == 1: | |
172 # item we want to delete was not found, error out | |
173 raise AssertionError( | |
3148
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fix newline in error message
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
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3140
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174 _("failed to remove %s from manifest") % f) |
1534 | 175 if dstart != None and dstart <= start and dend >= start: |
176 if dend < end: | |
177 dend = end | |
178 if l: | |
179 dline.append(l) | |
644 | 180 else: |
1534 | 181 if dstart != None: |
182 delta.append([dstart, dend, "".join(dline)]) | |
183 dstart = start | |
184 dend = end | |
185 dline = [l] | |
644 | 186 |
1534 | 187 if dstart != None: |
188 delta.append([dstart, dend, "".join(dline)]) | |
189 # apply the delta to the addlist, and get a delta for addrevision | |
190 cachedelta = addlistdelta(addlist, delta) | |
644 | 191 |
1534 | 192 # the delta is only valid if we've been processing the tip revision |
193 if self.mapcache[0] != self.tip(): | |
194 cachedelta = None | |
195 self.listcache = addlist | |
196 | |
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Cleanup of whitespace, indentation and line continuation.
Thomas Arendsen Hein <thomas@intevation.de>
parents:
4258
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197 n = self.addrevision(buffer(self.listcache), transaction, link, |
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Thomas Arendsen Hein <thomas@intevation.de>
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198 p1, p2, cachedelta) |
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Combine manifest dict and flags dict into a single object
Matt Mackall <mpm@selenic.com>
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199 self.mapcache = (n, map) |
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Add back links from file revisions to changeset revisions
mpm@selenic.com
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200 |
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Add back links from file revisions to changeset revisions
mpm@selenic.com
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201 return n |